China BDV Tester Manufacturers, Suppliers, Factory

​The Insulation Resistance Tester is a universal high-voltage measuring instrument that can be used for measuring AC high voltage and DC high voltage in power systems, electrical appliances, and electronic equipment manufacturing departments. The insulation withstand voltage tester is composed of a high-voltage measurement section and a low-voltage display instrument. During work, the high-voltage section and low-voltage instruments are separated, ensuring reliable operation. It has a portable structure, and the entire machine uses an aluminum alloy packaging box as the casing, which is very convenient to use and carry.

​In recent years, many substations in China have experienced expanded accidents due to lightning strikes. Most of the grounding resistance related to the grounding grid is unqualified, which plays a role in working grounding and protective grounding. When the grounding resistance is too high, a grounding fault occurs, and the neutral point voltage offset increases, which may cause the sound phase and neutral point voltage to be too high, leading to equipment damage and exceeding the required insulation level.

High voltage test transformers can also experience faults in normal use, but small faults such as short circuits can actually be avoided. Now, let's introduce in detail the common faults and solutions of high-voltage test transformers.

With the rapid development of the power industry, the demand for equipment safety and reliability is increasing. SF6 gas, as an important insulating and arc-quenching medium, plays a crucial role in high-voltage electrical equipment. However, the purity of SF6 gas directly affects its performance and service life. Therefore, precise detection of SF6 gas purity is crucial.

​1. Do not plug or unplug the measuring wire when inputting current and voltage to avoid damaging the zinc oxide lightning arrester tester.

​The DC resistance test of transformer windings is an indispensable test item for transformers after handover, overhaul, and change of tap changer. Under normal circumstances, measuring the DC resistance of transformer windings and high-power inductive equipment using traditional methods is a time-consuming and labor-intensive task. To change this situation, shorten measurement time, and reduce the workload of testers, a transformer DC resistance tester can be used.